One way to automate a repetitive task or process on the command line is to use a shell script. 

A shell script is a program written in the shell programming language. It can be used to automate tasks such as running commands, performing backups, and more. To create a shell script, you can use a text editor to write the commands you want to automate, and then save the file with a .sh file extension. Once the script is saved, you can make it executable by running the command "chmod +x [script name]" and then run the script by typing "./[script name]" in the command line. Another way is using tools like cron or systemd timer to schedule the script to run in certain interval.